Heat sink assembly

Details Heat sink assembly Heat sink assembly

2008-03-11

2008-03-11

Thompson, Gregory D (Department: 2835)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C165S080300, C165S185000, C361S704000, C361S710000

Reexamination Certificate

active

11244916

ABSTRACT:
A heat sink assembly includes a heat spreader (10), a plurality of fins (12) extending from the spreader, fasteners (20) and securement sleeves (30) fixed to the fasteners. The fastener includes a head (200) and a shaft (204) having a threaded bottom end (208). The sleeve comprises a cylindrical wall (302), an upper open end (304) and a lower open end (306). The sleeve further has an annular pedestal (308) perpendicularly connected with the wall and extending in the lower open end. The head is received in the wall and contacts the pedestal. The shaft extends through the spreader. A compressed spring (22) is providing between the head and the spreader for urging the spreader downwardly to engage with a heat generating electronic device.

REFERENCES:
patent: 5384940 (1995-01-01), Soule et al.
patent: 5603374 (1997-02-01), Wu
patent: 5757621 (1998-05-01), Patel
patent: 5901039 (1999-05-01), Dehaine et al.
patent: 6404632 (2002-06-01), Forkas
patent: 6549410 (2003-04-01), Cohen
patent: 6826054 (2004-11-01), Liu
patent: 2004/0184238 (2004-09-01), Yang

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